Refrigerator



REFRIGERATOR Filed July 31, 1935 2 Sheets-Sheet l 4 INVE -T'OR EugeneKOTEET Attor11y NOV. 1, 1938. KORBER 2,135,402

REFRIGERATOR Filed July 31, 1955 2 Sheets-Sheet 2 MLW/m.

INVENTOR Attorney Patented Nov. 1, 1938 UNITED STATES PATENT OFFICE 1Claim.

This invention relates to improvements in a refrigerator. The primaryobject of the invention is to provide means to carry a standardrefrigerant in close proximity to a refrigerator wall 5 as manufacturedin a standard domestic refrigerator, or the well or chamber of an icecream cabinet refrigerator.

A further object of the invention is to provide improved means forcirculating the refrigerant medium. Heretofore, it has been commonpractice to carry the same in copper pipes or tubing, which has beenfound, by those skilled in the art to be unsatisfactory due to thenature and ingredients of the said refrigerant, the pipes or tubingbeing constantly in need of repair'as the solder is eaten away thereby.

A still further object of the invention is to replace the said coils bya double sleeve device carrying the refrigerant medium therebetween andhaving means in conjunction therewith whereby two or more of the saidsleeves may be connected together for any desired purpose, one of whichbeing the multiple Well ice cream cabinet shown in the drawings.

appear from the description, the invention consists in the novelconstruction and arrangement of parts as hereinafter more specificallyset forth, claimed and shown in the accompanying drawings forming partof this application and in which:

Fig. l is a sectional view of a multiple well ice cream refrigeratorcabinet showing my invention installed therein.

Fig. 2 is an enlarged detail sectional view of the upper end of thesleeves showing the connecting means.

Fig. 3 is a plan view of Fig. 1.

Fig. 4 is a sectional view on the line 44 of Fig. 1,' showing modifiedconstruction of various shapes of the refrigerant chambers.

Fi 5 is a vertical sectional detail view of the sleeves showing theconstruction thereof.

Referring more in detail to the drawings in which similar referencecharacters designate corresponding parts throughout the several views itwill be seen the invention comprises an insulated cabinet 10 constructedof standard lines and. containing therein one 'or more chambers or wellsH to receive the standard ice cream container. Surrounding the wells isan inner wall l2 which constitutes the wall of the said well. This wallmay be cylindrical as shown or may be square in cross-section or anyshape to suit the purpose for which it is required as shown in Fig. 4,and ex- With these and other objects in view that may tends from thebottom of the well to within a convenient distance from the top. Anouter wall I3 is arranged to fit outside the inner wall I2 leaving aspace M therebetween. This outer wall [3 may be of any required lengthand has a flange l5 formed on the top and a similar flange IS on thebottom thereof. The said flanges extend inwards toward the inner sleeveto which they are joined preferably by welding. As shown in Fig. 5, thesaid sleeve l3 may be of any desired length according to the amount ofrefrigerant it is required to carry. Obviously the longer the sleeve thegreater will be the capacity of the refrigerant space M and'consequentlythe effect on the contents of the well will be greater.

Where more than one such well is to be used, as in the case of themultiple well ice cream cabinet shown, the outer walls are provided withcouplings l6 and H, which are preferably welded thereto. The saidcouplings are arranged either diametrically opposite or at right anglesto each other so that the same may be connected together in anyconvenient manner. The couplings may be threaded for screwing togetheras shown or may be joined by a union fitting or if so desired they maybe telescoped and welded together for a more permanent connection.

In Fig. 4 is shown a variety of different shaped chambers H to which theconstruction may be adapted. The outer and inner walls of the chambersbeing formed from one or a number of plates welded together with top andbottom flanges between the Walls and welded thereto retain the Walls inspaced apart relation to each other and form closure means whereby therefrigerant medium is retained between the walls.

The condenser unit l8, condenser coil I9 and float device 20 are all ofstandard manufacture as used in refrigerating apparatus now on themarket. These units are connected to the sleeves by an intake pipe 2|and an outlet pipe 22 posi tioned above the same. The pipes are screwedinto a cover 23 on the end of the coupling l6. While they are both shownat the same end of the cabinet this arrangement may be changed and oneshown at one end and one at the opposite end of the cabinet, but ineither instance it will of course be necessary to keep the inlet andoutlet in their relative elevation with respect to each other.

In operation the space between the walls is filled with the refrigerantmedium to a height midway between the inlet and outlet pipes. The saidrefrigerant being in close proximity to the contents of the well reducesthe temperature thereof very rapidly which causes an evaporation of theliquid. The vapor thus formed is drawn through the outlet or suctionpipe,v

through the compressor to the condenser and circulates back through thefloat chamber to the tion has been disclosed, it is understood thatfmlnor changes in the details of construction;

combination and arrangement of co-operating elements may be resortedtotwithin the scope of what is claimed without departing from the spirit7 of the invention.

I claim:

2,135,402 V s 1 A A refrigerating unit comprising an insulated cabinethaving a series of chambers therein arranged in spaced parallelrelation, a double wall cylindrical metal lining extending entirelyaround the wall of each chamber, the walls of said lining being spacedapart with the inner wall extending the full length of the chamber andthe outer wall extending only part the length of the inner wall andconnected at the top and bottom to the'inner wall forming a refrigerantcirculating'space and sleeves extending from the outer walls of saidlining at diametrically opposite points, the sleeves of each liningbeing adapted to telescopically interfit with the sleeves'of the liningin the next adjacent chambers and welded together to estab- 'lishcommunication between the refrigerant space 01 each of the linings.

' EUGENE KORIBER.

